Sidewall portion of an automobile tire



FIG. 1 is a perspective view of a sidewall portion of an automobile tire according to my design;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a fragmentary enlarged view showing the details of the sidewall portion defied by cross-section by lines A-A and B-B in FIG. 2;

FIG. 6 is a section view taken along line 6-6 in FIG. 5; and,

FIG. 7 is a section view taken along line 7-7 in FIG. 5. 

CLAIM The ornamental design for a sidewall portion of an automobile tire, as shown and described. 